Product Lineup Boring Bars Applications Shank Type Coolant Insert Min. Bore Dia. φA Ref. to Page for Toolholders Boring Bar Type Shape Max. Overhang Length Hole (L/D) Yes No Type 5 6 7 8 10 12 14 16 18 20 25 30 32 40 50 63 1(: A…DCLN12 Steel ● Negative ● ● ● F67 L/D=~3 S…PCLN Steel ○ Negative ● ● ● ● ● L/D=~3 27 F68 A…PCLN09 Steel ● Negative ● ● ● Boring / Internal Facing L/D=~3 27 1(: A…DWLN08 Steel ● Negative ● ● ● F77 L/D=~3 S…PWLN Steel ○ Negative ● ● ● ● ● F76 F L/D=~3 27 F78 A…PWLN06 Steel ● Negative ● ● ● F76 L/D=~3 27 S…WWLN08-E Excellent ○ Negative ● ● ● F78 L/D=~5 28 34 Boring C…STXP(B) Carbide ○ Positive ● ● ● F51 L/D=~7 7.5 9 11 C…SJLC Carbide ○ Positive ● F46 L/D=~7 5.5 S…STWP-E Excellent ○ Positive ● ● ● ● ● L/D=~5 F50 S…STWP Steel ○ Positive ● ● ● ● L/D=~3 1(: A…DDUN15 Steel ● Negative ● ●● F70 Copying L/D=~3 S…PDUN11 Steel ○ Negative ● ● ● L/D=~3 27 F69 A…PDUN11 Steel ● Negative ● ● ● L/D=~3 27 S…PDUN15 Steel ○ Negative ● ● ● F71 L/D=~3 44 54 S…PDQN15 Steel ○ Negative ● ● ● F71 L/D=~3 44 54 Back Copying C…STZB Carbide ○ Positive ● F51 L/D=~7 8.5 C…SJZC Carbide ○ Positive ● F46 L/D=~7 6.5 S…PDZN15 Steel ○ Negative ● ● ● F71 L/D=~3 44 54 S…CTUP Steel ○ Positive ● ● ● ● ● ● F61 L/D=~3 27 34 43 1(: A…DTFN Steel ● Negative ● ● ● F74 L/D=~3 S…PTUN Steel ○ Negative ● ● ● ● ● ● L/D=~3 F75 Boring A…PTUN11 Steel ● Negative ● ● ● L/D=~3 1(: A…DSKN12 Steel ● Negative ● ● ● F73 L/D=~3 S…SSKP Steel ○ Positive ●● L/D=~3 F60 S…CSKP Steel ○ Positive ● ● ● ● L/D=~3 27 34 43 F10 For Min. Bore Dia. φA, the figure under may be applied depending on the toolholder type.